Bin e padrões para validação de cartão de crédito.
Bandeira | Começa com | Máximo de número | Máximo de número cvc |
---|---|---|---|
Visa | 4 | 13,16 | 3 |
Mastercard | 5 | 16 | 3 |
// Simple JavaScript Templating | |
// John Resig - http://ejohn.org/ - MIT Licensed | |
(function(){ | |
var cache = {}; | |
this.tmpl = function tmpl(str, data){ | |
// Figure out if we're getting a template, or if we need to | |
// load the template - and be sure to cache the result. | |
var fn = !/\W/.test(str) ? | |
cache[str] = cache[str] || |
{ | |
"states": [ | |
{ | |
"uf": "AC", | |
"name": "Acre", | |
"cities": [ | |
"Acrelândia", | |
"Assis Brasil", | |
"Brasiléia", | |
"Bujari", |
(function() { | |
var script, | |
scripts = document.getElementsByTagName('script')[0]; | |
function load(url) { | |
script = document.createElement('script'); | |
script.async = true; | |
script.src = url; | |
scripts.parentNode.insertBefore(script, scripts); |
W3C Introduction to Web Components - explainer/overview of the technologies
<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<title>Building a router</title> | |
<script> | |
// Put John's template engine code here... | |
(function () { | |
// A hash to store our routes: |
package main | |
import ( | |
"fmt" | |
"io/ioutil" | |
"net" | |
"os" | |
) | |
const ( |
defmodule MyBlog.Repo.Migrations.CreatePost do | |
use Ecto.Migration | |
def change do | |
create table(:posts, primary_key: false) do | |
add :id, :uuid, primary_key: true | |
add :body, :string | |
add :word_count, :integer | |
timestamps |
Outdated note: the process is a lot easier now: after you brew install postgresql
you can initialize or stop the daemon with these commands: brew services start postgresql
or brew services stop postgresql
.
new out put may look like
To have launchd start postgresql now and restart at login:
brew services start postgresql
Or, if you don't want/need a background service you can just run:
pg_ctl -D /usr/local/var/postgres start
My preferred code style is 2-space K&R. This is intended to provide a justification for this style.
K&R style has the following properties: